Answers: 2
Physics, 22.06.2019 09:20, Geo777
Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers
Answers: 1
Physics, 22.06.2019 10:40, rainbowboi
As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.
Answers: 1
Physics, 22.06.2019 17:00, deathray4035
Photons with the highest energy have the longest period
Answers: 1
A string can withstand a force of 135 N before breaking. A 2.0 kg mass is tied to the string and whi...
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